ALEXANDRIA, Va.  A conservative U.S. senator from Idaho who has said he doesn’t drink because of his Mormon faith has been charged with drunken driving.

Sen. Mike Crapo, a three-term Republican with a reputation as a social and fiscal conservative, registered a blood alcohol content of .11 percent after police pulled his car over in this suburb south of Washington, D.C., authorities said.

The 61-year-old lawmaker, who faces a court date Jan. 4, apologized in a statement issued hours after his arrest early Sunday.

“I am deeply sorry for the actions that resulted in this circumstance,” Crapo said in the statement Sunday night. “I made a mistake for which I apologize to my family, my Idaho constituents and any others who have put their trust in me. I accept total responsibility and will deal with whatever penalty comes my way in this matter.”

He also said he would take measures to ensure “this circumstance is never repeated.”

Crapo, who was elected in 1998 and is in his third Senate term, is expected to take over the top Republican spot next year on the Senate Banking Committee. He also serves on the Senate’s budget and finance panels and has been active on environmental and health issues.